Brahman

Brahman is the central concept of Vedānta. It refers to the ultimate, unlimited (ananta) reality, which is the material and efficient cause of the entire universe. Brahman is not a separate entity from the world — it is existence itself (sat), consciousness (cit), and fullness (ānanda). According to Śaṅkara, Brahman is nirguṇa (without limiting attributes) and is identical to ātman (the essential self).